 /*Copyright Mihai Bazon, 2002, 2003  |  http://dynarch.com/mishoo/ 
 * --------------------------------------------------------------------------- 
 * 
 * The DHTML Calendar 
 * 
 * Details and latest version at: 
 * http://dynarch.com/mishoo/calendar.epl 
 * 
 * This script is distributed under the GNU Lesser General Public License. 
 * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html 
 * 
 * This file defines helper functions for setting up the calendar.  They are 
 * intended to help non-programmers get a working calendar on their site 
 * quickly.  This script should not be seen as part of the calendar.  It just 
 * shows you what one can do with the calendar, while in the same time 
 * providing a quick and simple method for setting it up.  If you need 
 * exhaustive customization of the calendar creation process feel free to 
 * modify this code to suit your needs (this is recommended and much better 
 * than modifying calendar.js itself). 
 */ 
 
// $Id: calendar-setup.js 3016 2006-12-11 12:49:54Z chtito $ 
 
/** 
 *  This function "patches" an input field (or other element) to use a calendar 
 *  widget for date selection. 
 * 
 *  The "params" is a single object that can have the following properties: 
 * 
 *    prop. name   | description 
 *  ------------------------------------------------------------------------------------------------- 
 *   inputField    | the ID of an input field to store the date 
 *   displayArea   | the ID of a DIV or other element to show the date 
 *   button        | ID of a button or other element that will trigger the calendar 
 *   eventName     | event that will trigger the calendar, without the "on" prefix (default: "click") 
 *   ifFormat      | date format that will be stored in the input field 
 *   daFormat      | the date format that will be used to display the date in displayArea 
 *   singleClick   | (true/false) wether the calendar is in single click mode or not (default: true) 
 *   firstDay      | numeric: 0 to 6.  "0" means display Sunday first, "1" means display Monday first, etc. 
 *   align         | alignment (default: "Br"); if you don't know what's this see the calendar documentation 
 *   range         | array with 2 elements.  Default: [1900, 2999] -- the range of years available 
 *   weekNumbers   | (true/false) if it's true (default) the calendar will display week numbers 
 *   flat          | null or element ID; if not null the calendar will be a flat calendar having the parent with the given ID 
 *   flatCallback  | function that receives a JS Date object and returns an URL to point the browser to (for flat calendar) 
 *   disableFunc   | function that receives a JS Date object and should return true if that date has to be disabled in the calendar 
 *   onSelect      | function that gets called when a date is selected.  You don't _have_ to supply this (the default is generally okay) 
 *   onClose       | function that gets called when the calendar is closed.  [default] 
 *   onUpdate      | function that gets called after the date is updated in the input field.  Receives a reference to the calendar. 
 *   date          | the date that the calendar will be initially displayed to 
 *   showsTime     | default: false; if true the calendar will include a time selector 
 *   timeFormat    | the time format; can be "12" or "24", default is "12" 
 *   electric      | if true (default) then given fields/date areas are updated for each move; otherwise they're updated only on close 
 *   step          | configures the step of the years in drop-down boxes; default: 2 
 *   position      | configures the calendar absolute position; default: null 
 *   cache         | if "true" (but default: "false") it will reuse the same calendar object, where possible 
 *   showOthers    | if "true" (but default: "false") it will show days from other months too 
 * 
 *  None of them is required, they all have default values.  However, if you 
 *  pass none of "inputField", "displayArea" or "button" you'll get a warning 
 *  saying "nothing to setup". 
 */ 
Calendar.setup = function (params) { 
        function param_default(pname, def) { if (typeof params[pname] == "undefined") { params[pname] = def; } }; 
 
        param_default("inputField",      null); 
        param_default("displayArea",     null); 
        param_default("button",          null); 
        param_default("eventName",       "click"); 
        param_default("ifFormat",        "%Y/%m/%d"); 
        param_default("daFormat",        "%Y/%m/%d"); 
        param_default("singleClick",     true); 
        param_default("disableFunc",     null); 
        param_default("dateStatusFunc",  params["disableFunc"]);        // takes precedence if both are defined 
        param_default("dateTooltipFunc", null); 
        param_default("dateText",        null); 
        param_default("firstDay",        null); 
        param_default("align",           "Br"); 
        param_default("range",           [0000, 2999]); 
        param_default("weekNumbers",     true); 
        param_default("flat",            null); 
        param_default("flatCallback",    null); 
        param_default("onSelect",        null); 
        param_default("onClose",         null); 
        param_default("onUpdate",        null); 
        param_default("date",            null); 
        param_default("showsTime",       false); 
        param_default("timeFormat",      "24"); 
        param_default("electric",        true); 
        param_default("step",            2); 
        param_default("position",        null); 
        param_default("cache",           false); 
        param_default("showOthers",      false); 
        param_default("multiple",        null); 
 
        var tmp = ["inputField", "displayArea", "button"]; 
        for (var i in tmp) { 
                if (typeof params[tmp[i]] == "string") { 
                        params[tmp[i]] = document.getElementById(params[tmp[i]]); 
                } 
        } 
        if (!(params.flat || params.multiple || params.inputField || params.displayArea || params.button)) { 
                alert("Calendar.setup:\n  Nothing to setup (no fields found).  Please check your code"); 
                return false; 
        } 
 
        function onSelect(cal) { 
                var p = cal.params; 
                var update = (cal.dateClicked || p.electric); 
                if (update && p.inputField) { 
                        p.inputField.value = cal.date.print(p.ifFormat); 
                        if (typeof p.inputField.onchange == "function") 
                                p.inputField.onchange(); 
                } 
                if (update && p.displayArea) 
                        p.displayArea.innerHTML = cal.date.print(p.daFormat); 
                if (update && typeof p.onUpdate == "function") 
                        p.onUpdate(cal); 
                if (update && p.flat) { 
                        if (typeof p.flatCallback == "function") 
                                p.flatCallback(cal); 
                } 
                if (update && p.singleClick && cal.dateClicked) 
                        cal.callCloseHandler(); 
        }; 
 
        if (params.flat != null) { 
                if (typeof params.flat == "string") 
                        params.flat = document.getElementById(params.flat); 
                if (!params.flat) { 
                        alert("Calendar.setup:\n  Flat specified but can't find parent."); 
                        return false; 
                } 
                var cal = new Calendar(params.firstDay, params.date, params.onSelect || onSelect); 
                cal.setDateToolTipHandler(params.dateTooltipFunc); 
                cal.showsOtherMonths = params.showOthers; 
                cal.showsTime = params.showsTime; 
                cal.time24 = (params.timeFormat == "24"); 
                cal.params = params; 
                cal.weekNumbers = params.weekNumbers; 
                cal.setRange(params.range[0], params.range[1]); 
                cal.setDateStatusHandler(params.dateStatusFunc); 
                cal.getDateText = params.dateText; 
                if (params.ifFormat) { 
                        cal.setDateFormat(params.ifFormat); 
                } 
                if (params.inputField && typeof params.inputField.value == "string") { 
                        cal.parseDate(params.inputField.value); 
                } 
                cal.create(params.flat); 
                cal.show(); 
                return false; 
        } 
 
        var triggerEl = params.button || params.displayArea || params.inputField; 
        triggerEl["on" + params.eventName] = function() { 
                var dateEl = params.inputField || params.displayArea; 
                var dateFmt = params.inputField ? params.ifFormat : params.daFormat; 
                var mustCreate = false; 
                var cal = window.calendar; 
                if (dateEl) 
                        params.date = Date.parseDate(dateEl.value || dateEl.innerHTML, dateFmt); 
                if (!(cal && params.cache)) { 
                        window.calendar = cal = new Calendar(params.firstDay, 
                                                             params.date, 
                                                             params.onSelect || onSelect, 
                                                             params.onClose || function(cal) { cal.hide(); }); 
                        cal.setDateToolTipHandler(params.dateTooltipFunc); 
                        cal.showsTime = params.showsTime; 
                        cal.time24 = (params.timeFormat == "24"); 
                        cal.weekNumbers = params.weekNumbers; 
                        mustCreate = true; 
                } else { 
                        if (params.date) 
                                cal.setDate(params.date); 
                        cal.hide(); 
                } 
                if (params.multiple) { 
                        cal.multiple = {}; 
                        for (var i = params.multiple.length; --i >= 0;) { 
                                var d = params.multiple[i]; 
                                var ds = d.print("%Y%m%d"); 
                                cal.multiple[ds] = d; 
                        } 
                } 
                cal.showsOtherMonths = params.showOthers; 
                cal.yearStep = params.step; 
                cal.setRange(params.range[0], params.range[1]); 
                cal.params = params; 
                cal.setDateStatusHandler(params.dateStatusFunc); 
                cal.getDateText = params.dateText; 
                cal.setDateFormat(dateFmt); 
                if (mustCreate) 
                        cal.create(); 
                cal.refresh(); 
                if (!params.position) 
                        cal.showAtElement(params.button || params.displayArea || params.inputField, params.align); 
                else 
                        cal.showAt(params.position[0], params.position[1]); 
                return false; 
        }; 
 
        return cal; 
}; 
